Amazon Black Howler vs Blue-faced Rail

Alouatta nigerrima compared with Gymnocrex rosenbergii

Key Differences

• Amazon Black Howler is Least Concern while Blue-faced Rail is Vulnerable.

Taxonomic Classification

Rank	Amazon Black Howler	Blue-faced Rail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Primates (Primates)	Gruiformes (Gruiformes)
Family	Atelidae	Rallidae
Genus	Alouatta	Gymnocrex
Species	Alouatta nigerrima	Gymnocrex rosenbergii

Evolutionary Relationship

Amazon Black Howler and Blue-faced Rail share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Amazon Black Howler

LC — Least Concern

Blue-faced Rail

VU — Vulnerable

Physical Characteristics

Attribute	Amazon Black Howler	Blue-faced Rail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazon Black Howler

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Blue-faced Rail

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Amazon Black Howler

The Amazon Black Howler (Alouatta nigerrima) is a species in the genus Alouatta. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Blue-faced Rail

The Blue Faced Rail (Gymnocrex rosenbergii) is a species in the genus Gymnocrex. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.